At the end of the 20th century, if you own a red brick house, it will become a topic of conversation for everyone, and others are very envious of you. Nowadays, red brick houses have basically disappeared and no one has built them again.

At the end of the 20th century, if you own a red brick house, it will become a topic of conversation for everyone, and others are very envious of you. Nowadays, red brick houses have basically disappeared and no one has built them again. Why is this?

red bricks

red bricks are also called clay bricks . It is made of many common materials such as clay, shale, coal stone and other common materials after crushing, mixing, and kneading. After the appearance is finished, it is then put into a 900-degree furnace to fire.

After firing, the red brick is just an ordinary light gray brick. The color is not red, and it is impossible to dye the red bricks again in the future. So why do you still call him red bricks?

It turns out that the red bricks are red because they are combined with oxygen in the air. The newly fired red bricks contain some iron elements. During the cooling process, the iron elements undergo an oxidation reaction, forming iron trioxide.

Iron trioxide itself has a red component, which makes the brick appear dark red.

Red bricks were invented by the ancient Romans. Many of the remaining buildings in Europe have the shadow of red bricks and have a long history of use.

m0m8

My country began to use red bricks in a large number in the 1960s. Although it has begun to be used in large quantities, most ordinary people still have nowhere to do with it. It was not until the 1980s that it began to flow into ordinary families in large quantities, and its application was mainly used as building materials for houses.

has strong durability, strength and light weight. Moreover, because it reacts with air during burning and cooling, it has the characteristics of porosity, so it also has the advantages of thermal insulation and sound insulation, which is deeply loved by people.

At the same time, most of the houses at that time were built with soil and wood. If the family has better conditions, they will go to the mountains to mine quarries and polish and build houses. This way, it takes a lot of time to build a house and requires more energy. Overall, the color, appearance and interior quality of these houses are not as good as that of red brick houses.

Government office spaces, state-owned enterprises, etc. use red brick buildings in large quantities. Building a red brick house has become a pursuit, and the first choice for building a house is to have a red brick house. By the 1990s, red brick houses were blooming all over the country, and demand increased year by year.

But by the beginning of the 21st century, red brick houses gradually decreased and gradually withdrew from the field of housing construction.

This is mainly because the red bricks are too harmful.

The harm of red bricks

The main material of red bricks is clay. Although my country's clay production is large, it cannot withstand the continued demand for red bricks.

Such a huge demand, red bricks will inevitably produce economic effects, and a large number of red brick manufacturers lack clay. So he set his sights on arable land with a large amount of clay.

clay contains a large amount of minerals, and has good water absorption and retention, which is suitable for the growth of crops. Large-scale destruction of arable land will lead to a crisis in the country's food security.

The red brick manufacturer contracted land everywhere for red brick firing. When the clay mining in this place was completed, it changed to a place to rebuild the production house.

According to relevant information, red bricks are at the highest peak in production, and a total of 5 million mu of land are contracted for red brick production each year.

The annual production of red bricks is as high as 600 billion pieces. The production of a piece of red brick requires several times its own clay. Just making red bricks consumes 1.3 billion cubic meters of land every year. The lost land causes almost 600,000 people to lose their arable land each year.

China is a country with a large population. Although the land area is huge, there is very little area suitable for arable land. The firing of red bricks destroys cultivated land everywhere and endangers national food security. This is the main reason why red bricks are prohibited from production.

Secondly, the firing technology requirements of red bricks are low, and a large number of private workshops can be burned. During the firing process, no prevention and control measures will be taken against pollutants and the pollutants will be discharged. When I was a child, I passed by the red brick factory and was basically filled with black smoke.

Most of the gases discharged are carbon dioxide , sulfur oxide , etc. Large-scale discharge will cause the intensification of greenhouse effect and the formation of acid rain.

Moreover, burning red bricks requires burning a large amount of coal for combustion, which consumes a lot of energy.It is not conducive to the country's path of sustainable development.

The later maintenance of red brick buildings is relatively difficult. Red bricks are rich in salt minerals and are prone to alkali reflux in the later stages of use. This causes white crystals to precipitate the inner wall of the brushed wall to form traces, which in severe cases will cause cracks in the wall and will not be easy to maintain.

Another one, the production of red bricks will cause great occupational diseases to workers. Workers work in high-temperature, toxic and dusty environments for a long time, which can easily cause circulatory diseases and cause pneumoconiosis.

Because of these shortcomings, the country started to manage it in the early 1990s, and the effect was not very ideal. It was not until 2000 that Guangzhou officially implemented the policy of banning red bricks in a comprehensive way that the development of red bricks was gradually eliminated.

The complete ban on red bricks is also due to the emergence of a large number of new alternative bricks.

The weight of bricks is much lighter than that of red bricks, and the materials used no longer contain clay. Most of them use concrete, fly ash and other materials. Many bricks also include fiber material , such as straw, to ensure strength while protecting the environment. The production cost is also far lower than that of red bricks, which can bring greater benefits to the enterprise.

can also be recycled and used for some red bricks that are still valuable, which is also a way to save resources. At the same time, adding a small amount of recycled red bricks to some buildings can also create some historical charm.

Nowadays, red brick production has become history. In 2012, the country completely banned the production of red bricks. The ban on red bricks is an inevitable result of historical development and a witness to our country's development.